AU770706B2 - Booster, monitoring apparatus, booster system, control method and monitoring method - Google Patents

Booster, monitoring apparatus, booster system, control method and monitoring method Download PDF

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Publication number
AU770706B2
AU770706B2 AU55025/00A AU5502500A AU770706B2 AU 770706 B2 AU770706 B2 AU 770706B2 AU 55025/00 A AU55025/00 A AU 55025/00A AU 5502500 A AU5502500 A AU 5502500A AU 770706 B2 AU770706 B2 AU 770706B2
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Australia
Prior art keywords
booster
base station
signal
information
reference signal
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AU55025/00A
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AU5502500A (en
Inventor
Kazuhito Ito
Yasushi Ito
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NTT Docomo Inc
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NTT Docomo Inc
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Publication of AU5502500A publication Critical patent/AU5502500A/en
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Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535—Control of relay amplifier gain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Relay Systems (AREA)

Description

S&FRef: 521687
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT
ORIGINAL
Name and Address of Applicant: Actual Inventor(s): Address for Service: NTT DoCoMo, Inc.
11-1, Nagatacho 2-chome, Chiyoda-ku Tokyo 100-6150 Japan Yasushi Ito, Kazuhito Ito Spruson Ferguson St Martins Tower 31 Market Street Sydney NSW 2000 Invention Title: Booster, Monitoring Apparatus, Booster System, Control Method and Monitoring Method The following statement is a full description of this invention, including the best method of performing it known to me/us:- ~9 i~ '2~82 1 5845c
I
Booster, Monitoring Apparatus, Booster System, Control Method and Monitoring Method The present invention relates to a booster for receiving, amplifying and transmitting signals to be transferred between a base station and a mobile station, a monitoring equipment of the booster, a booster system, a control method of the booster and a monitoring method of the booster.
Conventionally, the gain of a booster is adjusted at the installation of the booster before its operation.
Assuming that the gain of a booster is Gb, the noise figure of the booster is NFb, its thermal noise is NkT, the noise at a base station without the booster is NbS, and the propagation loss between the booster and base station is L, the noise Nbs' at the base station when the booster is equipped, is expressed as follows: Nbs' GbNFbNkT/L Nbs (1) is preferable that the effect of the noise produced by the booster on the base station be sufficiently small, satisfying the following expression.
NbS GbNFbNkT/L (2) When a new base station is installed near the booster, the booster is readjusted to make the effect of the booster on the new base station sufficiently small.
Conventionally, a new base station installed in an area covered by the booster because of poor radio wave intensity in mobile communication can suffer from the noise or 2 interference of the booster. In particular, the system performance of CDMA (Code Division Multiple Access) utilizing the same frequency depends greatly on the interference. Thus, it is preferable that the effect of the interference be reduced as much as possible by decreasing the gain of the booster.
Conventionally, however, because of the fixed gain of the booster, the gain of the booster must be readjusted manually at the spot every time a new base station is installed near the booster.
Generally, comparing the area under the booster where the booster exchanges radio waves with mobile stations in S" the CDMA with the area under the base station where the base station exchanges radio waves directly with the mobile 15 stations, the area under the base station is greater.
For example, assume that a condition changes from the 9initial state in which the traffic under the booster is heavy and the traffic under the base station is light to a state in which the traffic under the base station is heavy.
To increase the traffic under the base station, the traffic S. under the booster must be limited by reducing the gain of the booster, for example.
Conventionally, however, because the gain of the booster is fixed, it cannot be reduced.
Furthermore, since the booster is a device for receiving and amplifying radio waves, and transmitting them into space, its failure or malfunction will have a large effect on channel quality. Accordingly, it is preferable to monitor an increasing number of items. In addition, it is desirable to monitor not only amplifiers, but also failures 3 of operation circuits and the like.
For example, when the gain of an uplink signal is much smaller than the gain of a downlink signal, the mobile station increases its transmission power to maintain prescribed quality. Accordingly, it is difficult for the base station to detect a failure of the booster. Thus, it is preferable to install a monitor-control equipment to carry out suitable monitoring of the booster using information about parameters for setting the gain of the booster, information about the condition of the booster and the like which information is transmitted to the monitorcontrol equipment, thereby detecting and controlling the failure or malfunction of the booster.
.o o 15 It is therefore an object of the present invention to reduce the adverse effect of the booster noise on the base station by controlling the gain of the booster.
Another object of the present invention is to adjust the balance between the traffic under the booster and the traffic under the base station by controlling the gain of the booster.
Still another object of the present invention is to carry out suitable monitoring of a booster by transmitting information about the booster (information about parameters for setting the gain of the booster, information about the condition of the booster and the like) to a monitoring equipment so that the monitoring equipment monitors the booster using these information items.
A method will now be described of reducing the adverse effect of the booster noise on the base station by -4 controlling the gain of the booster.
Assume that the booster amplifies the radio waves (uplink signal) transmitted from the mobile station, and that the propagation loss between base station A and the booster is Li If the expression N o Nb L, is satisfied, where NO [dBm] is the noise power at the base station A, and Nb [dBm] is the noise power of the amplified uplink signal at the booster, it can be said that the Nb has little effect on the base station A. In other words, it can be said that the booster noise has little effect on the base station A if the following expressions are satisfied.
Nb LI N. (3) 15 Gb Li NFo NFb (4) where Gb is the gain of the booster, NFb is the noise figure of the booster, and NFo is the noise figure of the base station A.
Next, assume that a new base station B is installed at a location at which its propagation loss L 2 is less than the propagation loss Without the readjustment of the gain of the booster, the effect of the booster noise on the base station B is greater than that on the base station A by an amount of about L, L 2 When the propagation loss between the base station B and the booster is L 2 where L, L 2 the gain of the booster Gb should be adjusted to satisfy the following expressions.
Nb L 2 No i Gb L 2 NFo NFb (6) Next, a method will be described of adjusting the balance between the traffic under the booster and the traffic under the booster by controlling the gain of the booster.
Assume that the interference quantity in the base station is I1, and that the interference quantity of an uplink signal input in the booster is I b the interference quantity in the base station from the uplink signal which is amplified by the booster and transmitted to the base station is Ib', and the propagation loss between the base station and the booster is L. If the traffic is limited to 15 that under the booster, the following expression holds.
Ib Gb I b L (7) *"For example, when the interference quantity I, in the base station is large and approximately satisfies the expression above, it can be estimated that the traffic S. S.
under the booster is heavy, bearing severely upon the traffic under the base station. If the gain of the booster is reduced in such a case, the uplink communication of the CDMA tries to maintain the received level of the base station at a fixed level by carrying out transmission power control. Thus, the reduction in the booster gain little affects the interference quantity and traffic at an initial stage.
However, since the transmission power of the mobile 6 stations has a limit, the interference quantity Ib' from the booster to the base station gradually reduces, with the reduction in the received power of the downlink signal, thereby reducing the area under the booster. The decreasing interference quantity in the base station can increase the traffic under the base station.
In summary, since the same frequency is used by a plurality of users in the CDMA, the received level and noise power density of the booster increase with the traffic under the booster. Varying the gain of the booster with the increase can change the area, thereby limiting the traffic under the booster.
To accomplish the foregoing object, in a first aspect •co* of the present invention, there is provided a booster for 15 receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, the booster comprising: an uplink signal amplifier for amplifying an uplink signal from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for S measuring received power of the reference signal at the booster; a transmission power information receiver for receiving information about transmission power of the reference signal at the base station; a noise power measuring unit for measuring noise power at the booster of the uplink signal amplified by the uplink signal amplifier; and a gain controller for controlling an gain of the uplink 7 signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster and the noise power of the amplified uplink signal at the booster.
Here, the booster may further comprise: a downlink signal amplifier for amplifying a downlink signal sent from the base station to the mobile station, and the gain controller may further control the gain of the downlink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster and the noise power of the amplified uplink signal at the booster.
*o o The booster may further comprise: 15 an interference measuring unit for measuring an interference quantity of the amplified uplink signal in the booster; and oo o an interference quantity information receiver for receiving information about an interference quantity in the base station, and the gain controller may control the gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
The booster may further comprise: a downlink signal amplifier for amplifying a downlink signal sent from the base station to the mobile station, 8 and the gain controller may further control the gain of the downlink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
In a second aspect of the present invention, there is provided a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, the booster comprising: an uplink signal amplifier for amplifying an uplink :oo signal sent from the mobile station to the base station; 15 a received power measuring unit for receiving a reference signal sent from the base station, and for 9u eo ~measuring received power of the reference signal at the booster; a transmission power information receiver for receiving information about transmission power of the reference signal at the base station; 9* *an interference measuring unit for measuring an interference quantity in the booster of the uplink signal amplified by the uplink signal amplifier; an interference quantity information receiver for receiving information about the interference quantity in the base station; and a gain controller for controlling the gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of 9 the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
Here, the booster may further comprise: a downlink signal amplifier for amplifying a downlink signal sent from the base station to the mobile station, and the gain controller may further control the gain of the downlink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
The reference signal may include information about the 15 interference quantity in the base station, and the interference quantity information receiver may receive the information about the interference quantity in the base station by receiving the reference signal.
The reference signal may include information about transmission power of the reference signal at the base station, and the transmission power information receiver may receive the information about the transmission power of the reference signal at the base station by receiving the reference signal.
In a third aspect of the present invention, there is provided a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, the booster comprising: an uplink signal amplifier for amplifying an uplink 10 signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; a noise power measuring unit for measuring noise power at the booster of the uplink signal amplified by the uplink signal amplifier; and an information transmitter for transmitting information about the received power of the reference signal at the booster and about the noise power of the amplified uplink signal at the booster to a monitoring equipment for monitoring the booster.
*o o 1 Here, the booster may further comprise: 15 an interference measuring unit for measuring an interference quantity of the amplified uplink signal in the :o ~booster, and the information transmitter may transmit information about the interference quantity of the amplified uplink signal in the booster to the monitoring equipment for monitoring the booster.
In a fourth aspect of the present invention, there is provided a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, the booster comprising: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the 11 booster; an interference measuring unit for measuring an interference quantity in the booster of the uplink signal amplified by the uplink signal amplifier; and information transmitter for transmitting information about the received power of the reference signal at the booster and about the interference quantity of the amplified uplink signal in the booster to the monitoring equipment for monitoring the booster.
Here, the booster may further comprise: an interference quantity information receiver for receiving information about an interference quantity in the 00 0 4 base station, and 0000e0 the information transmitter may transmit, to the 15 monitoring equipment for monitoring the booster, the information about the interference quantity in the base *0*0 station.
000.
The reference signal may include the information about the interference quantity in the base station, and *020 the interference quantity information receiver may 00. receive the information about the interference quantity in 0000 the base station by receiving the reference signal.
The booster may further comprise: a transmission power information receiver for receiving information about transmission power of the reference signal at the base station, and the information transmitter further may transmit the information about the transmission power of the reference signal at the base station to the monitoring equipment for monitoring the booster.
12 The reference signal may include the information about the transmission power of the reference signal at the base station, and the transmission power information receiver may receive the information about transmission power of the reference signal at the base station by receiving the reference signal.
The booster may further comprise: a booster information acquisition unit for capturing information about a condition of the booster, and the information transmitter may transmit the information about the condition of the booster to the monitoring equipment for monitoring the booster.
ee e o The information transmitter may transmit information 15 about the gain of the uplink signal to the monitoring equipment for monitoring the booster.
The booster may further comprise a downlink signal amplifier for amplifying a downlink signal from the base station to the mobile station.
20 The information transmitter may transmit the information about the gain of the downlink signal to the monitoring equipment for monitoring the booster.
The downlink signal amplifier may be able to change a time constant for adjusting the gain of the downlink signal.
The booster may further comprise: a control signal receiver for receiving a control signal from the monitoring equipment; and a booster controller for controlling the booster in accordance with the control signal.
-13- The booster controller may control, when the control signal is a signal for controlling the gain of the uplink signal and/or the gain of the downlink signal, the gain of the uplink signal and/or the gain of the downlink signal in accordance with the control signal.
The reference signal may be a perch signal.
The uplinkk signal amplifier may be able to vary a time constant for adjusting the gain of the uplink signal.
The downlink signal amplifier may be able to vary a time constant for adjusting the gain of the downlink signal.
In a fifth aspect of the present invention, there is provided a monitoring equipment for monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, the monitoring equipment comprising: A first information receiver for receiving information about received power at the booster of a reference signal transmitted from the base station and about noise power at the booster of an uplink signal which is sent from the mobile station to the base station and amplified by the booster; A second information receiver for receiving information about transmission power of the reference signal at the base station; and [R:\LIBCC]04048.doc:gmm 14 a monitoring unit for monitoring the booster in response to the'received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, and the transmission power of the reference signal at the base station.
Here, the monitoring equipment may further comprise: a third information receiver for receiving information about an interference quantity in the base station, and the first information receiver may further receive information about an interference quantity of the amplified uplink signal in the booster, and the monitoring unit may monitor the booster in response to the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station as well.
In a sixth' aspect of the present invention, there is provided a monitoring equipment for monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, 2. 0 the monitoring equipment comprising: a first information receiver for receiving information about received power at the booster of a reference signal transmitted from the base station and about interference quantity in the booster of an uplink signal which is sent from the mobile station to the base station and amplified by the booster; a second information receiver for receiving information about transmission power of the reference signal at the 9* base station; a third information receiver for receiving information 15 about an interference quantity in the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster, the transmission power of the reference signal at the base station and the interference quantity in the base station.
Here, the reference signal may include the information about the interference quantity in the base station, and the third information receiver may receive the information about the interference quantity in the base station by receiving the reference signal.
The third information receiver may receive the information about the interference quantity in the base *e.
station, which information is transmitted from the booster.
The third information receiver may receive, at the base station, the information about the interference quantity in the base station, and *the monitoring unit may acquire the information about 20 the interference quantity in the base station from the third information receiver via a telephone line.
The reference signal may include information about transmission power of the reference signal at the base station, and the second information receiver may receive the information about the transmission power of the reference signal at the base station by receiving the reference signal.
The second information receiver may receive the information about the transmission power of the reference 16signal at the base station, which information is transmitted from the booster.
The first information receiver may receive, at the base station, information about the received power at the booster of the reference signal transmitted from the base station and the noise power of the amplified uplink signal at the booster; the second information receiver may receive, at the base station, the information about the transmission power of the reference signal at the base station; and the monitoring unit may acquire via a telephone line, from the first information receiver, information about the received power at the booster of the reference signal Se Stransmitted from the base station and about the noise power of the amplified uplink signal at the booster, and from the second information receiver, the information about the oeo transmission power of the reference signal at the base 00@e oo• station.
the first information receiver may further receive ee 20 information about a condition of the booster; and the monitoring unit may monitor the booster in response 0000 to the booster condition, as well.
The first information receiver may receive information about the gain of the uplink signal and/or about the gain of the downlink signal; and the monitoring unit may monitor the booster in response to the gain of the uplink signal and/or the gain of the downlink signal, as well.
Here, the monitoring equipment may further comprise: a control signal transmitter for transmitting to the 17 booster a control signal for controlling the gain of the uplink signal and/or the gain of the downlink signal, and the monitoring unit may generate the control signal in response to a monitoring result.
Here, the reference signal may be a perch signal.
In a seventh aspect of the present invention, there is provided a booster system including a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, 1 0 and a monitoring equipment for monitoring the booster, wherein the booster comprises: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; 20 a noise power measuring unit for measuring noise power at the booster of the uplink signal amplified by the uplink signal amplifier; and *o 0* an information transmitter for transmitting information about the received power of the reference 25 signal at the booster and about the noise power of the o:oo amplified uplink signal at the booster to the monitoring equipment, and wherein "00" the monitoring equipment comprises: a first information receiver for receiving the 0 information about the received power of the reference 18 signal at the booster and about the noise power of the uplink signal at the booster; a second information receiver for receiving information about transmission power of the reference signal at the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, and the transmission power of the reference 1io -signal at the base station.
In a eighth aspect of the present invention, there is provided a booster system including a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, and a monitoring equipment for monitoring the booster, wherein the booster comprises: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base I. i'20 station; i: r e a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; an interference measuring unit for measuring an interference quantity in the booster of the uplink signal "i amplified by the uplink signal amplifier; and oo an information transmitter for transmitting information about the received power of the reference signal at the booster and about the interference quantity 19 of the amplified 'plink signal in the booster to the monitoring equipment, and wherein the monitoring equipment comprises: a first information receiver for receiving the information about the received power of the reference signal at the booster and about the interference quantity of the amplified uplink signal at the booster; a second information receiver for receiving information about transmission power of the reference 010 signal at the base station; a third information receiver for receiving interference quantity in the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster, the transmission power of the reference signal at the base station, and the interference quantity in the base station.
In a ninth aspect of the present invention, there is provided a control method of controlling, in a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, an gain of an uplink signal sent from the mobile station to the base station, the control method comprising the steps of: receiving a reference signal sent from the base station, and measuring received power of the reference o o signal at the booster; *.:":receiving information about transmission power of the reference signal at the base station; reference signal at the base station; 20 measuring noise power at the booster of the uplink signal amplified by the booster; and controlling an gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster and the noise power of the amplified uplink signal at the booster.
In a tenth aspect of the present invention, there is provided a control method of controlling, in a booster for -receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, an gain of an uplink signal sent from the mobile station to the base station, the control method comprising the steps of: receiving a reference signal sent from the base station, and measuring received power of the reference signal at the booster; receiving information about transmission power of the reference signal at the base station; o°°o :20 measuring an interference quantity in the booster of the uplink signal amplified by the booster; receiving information about the interference quantity in the base station; and controlling the gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
In a eleventh aspect of the present invention, there is 21 provided a monitoring method of monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, the monitoring method comprising the steps of: receiving information about received power at the booster of a reference signal transmitted from the base station and about noise power at the booster of an uplink signal which is sent from the mobile station to the base station and amplified by the booster; 0 receiving information about transmission power of the reference signal at the base station; and monitoring the booster in response to the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, and the transmission power of the reference signal at the base station.
In a twelveth' aspect of the present invention, there is provided a monitoring method of monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, the monitoring equipment comprising: -receiving information about received power at the S booster of a reference signal transmitted from the base station and about interference quantity in the booster of an uplink signal which is sent from the mobile station to ~the base station and amplified by the booster; receiving information about transmission power of the reference signal at the base station; S..
*receiving information about an interference quantity in the base station; and 22 monitoring the booster in response to the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster, the transmission power of the reference signal at the base station and the interference quantity in the base station.
The foregoing configuration makes it possible to reduce the harmful effect of the booster noise on the base station by controlling the gain of the booster.
In addition, the gain control of the booster makes it possible to control the balance between the traffic under the booster and the traffic under the base station.
Moreover, the monitoring equipment can carry out its monitoring appropriately using the information about the 15 booster, which is transmitted to it, such as the information about parameters for setting the gain of the booster, and information about the condition of the booster.
The above and other objects, effects, features and advantages of the present invention will become more apparent from the following description of embodiments S thereof taken in conjunction with the accompanying drawings.
Fig. 1 is a block diagram showing a configuration of a booster of a first embodiment in accordance with the present invention; Fig. 2 is a block diagram showing a configuration of a booster monitoring equipment of a second embodiment in accordance with the present invention; 23 Fig. 3 is a block diagram showing a configuration of a booster monitoring equipment of a third embodiment in accordance with the present invention; and Fig. 4 is a block diagram showing a configuration of a booster monitoring equipment of a fourth embodiment in accordance with the present invention; The embodiments in accordance with the present invention will now be described with reference to io accompanying drawings.
[FIRST EMBODIMENT] Fig. 1 is a block diagram showing a configuration of a booster of a first embodiment in accordance with the 15 present invention.
A booster 100 of the present embodiment comprises power dividers 104 and 106, variable attenuators 108 and 110, an operation circuit 112, amplifiers 114 and 116, a receiver .:oo 118, a transmitter 120, a combiner 122, a conditionmonitoring circuit 124, duplexers 126 and 128, antennas 130 and 132, a noise measuring unit 140 and an interference Smeasuring unit 150. The noise measuring unit 140 includes a bandpass filter (BPF) 142 and a detector 144, and the interference measuring unit 150 includes a bandpass filter 152 and a detector 154.
The booster 100 receives, amplifies and transmits downlink signals from base stations 180, 182 and the like to a mobile station 190 and the like, and uplink signals from the mobile station 190 and the like to the base stations 180, 182 and the like. More specifically, it 24 receives the signals transmitted from the base stations 180, 182 and the like, amplifies the received signals, and transmits the amplified signals to the mobile station 190 and the like. On the other hand, it receives the signals transmitted from the mobile station 190 and the like, amplifies the received signals, and transmits the amplified signals to the base stations 180, 182 and the like.
The signals (downlink signals) transmitted from the base stations 180, 182 and the like are supplied to the variable attenuator 108 via the antenna 130, duplexer 126 and power divider 104 and then to the amplifier 114 with being amplified through the variable attenuator 108 and amplifier 114 by a particular gain, and are transmitted to the mobile station 190 and the like via the duplexer 128 15 and antenna 132. On the other hand, the signals (uplink signals) transmitted from the mobile station 190 and the oo like are supplied to the amplifier 116 via the antenna 132, duplexer 128 and combiner 122, and then to the variable attenuator 110 with being amplified through the amplifier 116 and variable attenuator 110 by a particular gain, and are transmitted to the base stations 180, 182 and the like via the power divider 106, duplexer 126 and antenna 130.
In thepresent embodiment, the receiver 118 has the same configuration as the receiver of the mobile station, and the transmitter 120 has the same configuration as the transmitter of the mobile station so that they are inexpensive.
The booster 100 controls the gain of the uplink signals and the gain of the downlink signals in accordance with the foregoing expression to reduce the effect of the noise 25 of the booster 100 on the base stations 180, 182 and the like. It is assumed here that the noise figure NF, of the base station is known in advance.
In the mobile communication, each base station normally transmits a perch signal continuously which is used for searching for a visited cell. The perch signal, when it includes information about its transmission power (value) Ptpch [dBm] at the base station, enables the booster to obtain the propagation loss L, Ptpch Prpch) [dB] between the base station and the booster from the transmission power Ptpch and the received power (value) Prpch [dBm] of the perch signal at the booster.
S"In the present embodiment, receiving the perch signal, *99* the receiver 118 extracts from the perch signal the 15 information about the transmission power of the perch signal at the base station (and the information about the interference quantity of the amplified uplink signal in the base station). Furthermore, the receiver 118 measures the received power of the perch signal received. It is also possible for the booster to directly receive the information about the transmission power of the perch 9* 99 S signal at the base station without receiving the perch signal.
Although the present embodiment uses the perch signal as a reference signal for measuring the propagation loss between the booster and base station or the like, it can also use a signal other than the perch signal as the reference signal.
The booster measures the noise power Nb of the amplified uplink signal at the booster using the noise 26 measuring unit 140. As for the noise measurement, it is enough to measure power density. Thus, the present embodiment measures the noise power Nb using the narrow-band bandpass filter 142 with a frequency immediately next to the operating band, and the detector 144. Once the noise power Nb has been measured, the noise figure of the booster NFb can be obtained.
The effect of the noise of the booster 100 on the base stations 180, 182 and the like can be reduced by automatically controlling the gain Gb of the booster 100 using the noise figure NF, of the base station thus obtained, the propagation loss L, between the base station e" ~and the booster, the noise figure NFb of the booster and o expression The control of the gain of the uplink :15 signals is carried out by transferring a gain setting signal from the operation circuit 112 to the amplifier 116 0000 and variable attenuator 110 to control them. On the other 0000 hand, the control of the gain of the downlink signals is carried out by transferring a gain setting signal from the operation circuit 112 to the amplifier 114 and variable attenuator 108 to control them.
0°o°.0 The gain of the uplink signals may differ from the gain of the downlink signals. In data communication, data volumes usually differ between downlink channels and uplink channels, and generally, the downlink channels have a greater volume. In such a case, it is possible to operate the booster at minimum power required by providing a difference between the gain of the uplink signals and the gain of the downlink signals.
When varying the gain of the uplink signals, the 27 amplifier 116 and variable attenuator 110 can control the time constant for the variation. Likewise, when varying the gain of the downlink signals, the amplifier 114 and variable attenuator 108 can control the time constant for the variation. It is preferable that the time constant for varying the gain of the uplink signals and that for varying the gain of the downlink signals be increased in order to prevent the effect on the transmission power control of the base station or mobile station.
In the present embodiment, the booster 100 always scans the perch signals of peripheral base stations, and the receiver 118 searches for a perch signal with the highest "0"0 received level. For example, when a second base station is newly installed near the booster 100, and if the 15 propagation loss L 2 between the second base station and the ~booster 100 satisfies the relationship L, L 2 where L, is S the propagation loss between the first base station and the booster 100, the gain Gb of the booster 100 is controlled to "c satisfy the foregoing expression (corresponding to expression Thus, when the new base station is ::installed near the booster 100, the gain of the booster is reduced in response to the new base station to weaken the effect of the noise and interference quantity on the base station.
On the contrary, when the base station, which has a small propagation loss to the booster and is most likely to be suffering from the noise and interference from the booster, becomes inoperable because of a disaster or the like, the gain of the booster can be increased within the limit satisfying the relationship of the foregoing 28 expression Even if the base station exchanging signals with the booster becomes inoperable, the booster can continue the mobile communication service by searching for the perch signals from the peripheral base stations, and by amplifying radio waves, if the booster can receive the radio waves from at least one of the base stations.
The booster 100 controls the balance between the traffic under the booster and the traffic under the base station by adjusting the gain of the booster in accordance with the relationship between I, and Ib' G b
I
b
L.
As described above, although the present embodiment extracts from the perch signal the information about the interference quantity I, in the base station, the information can also be directly received from the base 15 station without receiving the perch signal.
The propagation loss L between the base station and the booster can be obtained by the method described above.
The interference quantity Gb Ib of the amplified uplink signals in the booster is measured by the interference measuring unit 150. As for the interference quantity measurement, it is enough to measure the power density. Thus, in the present embodiment, the interference quantity Gb I b is measured using the narrow-band bandpass filter 152 passing signals within the band, and the detector 154. Once the Gb I b and L have been obtained, the Ib can be obtained.
The balance between the traffic under the booster and the traffic under the base station can be adjusted by controlling the gain Gb of the booster 100 in response to the interference quantity Io in the base station and the 29 interference quantity Ib' to the base station by the amplified uplink signals.
The booster 100 transmits to the monitoring equipment the information about the parameters for setting the gain of the booster 100, the information on the condition of the booster 100 and the like. On the other hand, receiving a control signal from the monitoring equipment, the booster 100 follows the control signal.
In the present embodiment, the booster 100 also transmits to the monitoring equipment the information about the parameters of setting the gain (the transmission power of the perch signal at each base station, the received power of the perch signal at the booster, the noise power of the amplified uplink signal at the booster, the interference quantity of the amplified uplink signal in the o• booster and the interference quantity in the base station), the booster condition and the gain (the gain of the uplink signals and the gain of the downlink signals). In the present embodiment, although all items of the information 20 are assumed to be transmitted to the monitoring equipment, part of them can be transmitted, or other items of information can be transmitted.
o The information about the conditions of the booster is acquired by the condition-monitoring circuit 124, and is transmitted to the transmitter 120. The information about the conditions of the booster includes information about the power supply of the booster 100, information about the power supply of the amplifiers 114 and 116 and the like.
Receiving these items of the information, the monitoring equipment can detect from them the failure or 30 malfunction of the booster 100 or the possibility thereof.
In addition, it can control the booster 100 by sending the control signal to the booster 100.
For example, the monitoring equipment carries out processing similar to that of the operation circuit 112 in the booster 100 using the parameters for setting the gain transmitted from the booster, thereby obtaining the gain.
If the obtained gain disagrees with the gain transmitted from the booster, a failure of the operation circuit 112, amplifiers 114 and 116 or the like can take place.
If any one of the variable attenuators 108 and 110 and the amplifiers 114 and 116 falls into a failure, the balance between the uplink and down link is extremely disturbed. When the gain of the uplink signals is greater than the gain of the downlink signals, the transmission power of the mobile stations communicating under the control of the booster 100 usually increases, which in turn S increases the interference quantity. Since the monitoring equipment receives the information about the interference quantity of the amplified uplink signals to the booster, it can distinguish between an increase in the interference quantity due to a normal increase in the traffic and an increase in the interference quantity due to a failure. In contrast, when the gain of the downlink signals is greater than the gain of the uplink signals, this will degrade the quality of the uplink channels, and hence increases the transmission power of the mobile stations to maintain the prescribed quality, thereby reducing the area. Therefore, with regard to the variables 10, Gb, I b and L defined above, there can arise an abnormal relationship as Gb Ib L I,.
31 As described above, when it receives the control signal from the monitoring equipment, the booster 100 follows the control signal. The control signal can include, for example, a signal for controlling the gain, a signal for resetting the booster 100, and a signal for turning off the power supply to the booster 100. For example, when the booster 100 receives the signal for controlling the gain, the operation circuit 112 controls the gain of the uplink signals and/or the gain of the downlink signals in response to the control signal.
In this way, the monitoring equipment can achieve appropriate monitoring of the booster.
[SECOND EMBODIMENT] Fig. 2 is a block diagram showing a configuration of the monitoring equipment of the booster of a second embodiment in accordance with the present invention.
The monitoring equipment 200 of the present embodiment comprises a controller 202, a transmitter 212, a receiver oooo 20 214, a duplexer 218 and an antenna 220. In the present embodiment, the transmitter 212, receiver 214, duplexer 218 and antenna 220 are the same as those of the base station oooo 210 so that the base station 210 also carries out 5 ~transmission and reception using the transmitter 212 and receiver 214.
In the present embodiment, the receiver 214 and transmitter 212 have the same configurations as the receiver and transmitter of the mobile station, both of which are inexpensive.
The controller 202 receives information about 32 parameters for setting the gain of the booster, information about the conditions of the booster and the like, via the antenna 220, duplexer 218 and receiver 214, and monitors the booster using these items of information. More specifically, it detects a failure or malfunction of the booster 100, or their possibility from the information. In addition, it sends a control signal to the booster via the transmitter 212, duplexer 218 and antenna 220 to control the booster as needed.
The various information items needed for monitoring do not require any extra receiver because they are received by the base station as an ordinary traffic channel.
Examples of detecting a failure or malfunction, or their possibilities, and the example of the control signal 15 are the same as those described in the first embodiment.
The monitoring equipment 200 according to the present embodiment can receive various information items, which S enables appropriate monitoring of the booster.
The monitoring equipment 200 of the present embodiment can be combined with the booster 100 of the first embodiment to configure a booster system. The booster 100 transmits to the monitoring equipment 200 the information about parameters for setting gain (such as the transmission power of the perch signal at each base station, received power of the perch signal at the booster, noise power of the amplified uplink signal at the booster, interference quantity of the amplified uplink signal in the booster and interference quantity in the base station), about the booster conditions, and about the gain (the gain of the uplink signals and the gain of the downlink signals).
33 Receiving these information items, the monitoring equipment 200 monitors the booster on the basis of these information items.
[THIRD EMBODIMENT] It is unnecessary for the booster to transmit the information about the transmission power of the perch signal at the base station and the information about the interference quantity in the base station, because they can be directly transmitted from the base station to the controller of the monitoring equipment without passing through the booster.
Fig. 3 is a block diagram showing a configuration of a booster monitoring equipment of a third embodiment in o 15 accordance with the present invention.
The monitoring equipment 300 according to the present embodiment comprises a controller 302, a transmitter 312, receivers 304 and 314, a power divider 316, a duplexer 318, and an antenna 320. The present embodiment shares the eeee 20 transmitter 312, receiver 314, power divider 316, duplexer 318 and antenna 320 with the base station 310.
Although the monitoring equipment 300 according to the oo present embodiment has nearly the same functions as those of the monitoring equipment 200 according to the second embodiment, it can receive by the receiver 304 a signal sent from the base station via the power divider 316, and transfer it to the controller 302. Thus, the monitoring equipment 300 can acquire the above-mentioned information about the transmission power of the perch signal at the base station and the information about the interference 34 quantity in the base station without having the booster transmit them. If the perch signal includes these information items, the receiver 304 can collect them by receiving the perch signal via the power divider 316.
Thus, the monitoring equipment 300 according to the present embodiment can receive the information items for implementing appropriate monitoring of the booster.
Although the monitoring equipment 300 according to the present embodiment has a configuration more complicated than that of the monitoring equipment 200 according to the second embodiment because of the receiver 304, it can collect the information about the transmission power of the perch signal at the base station and the information about the interference quantity in the base station without S" 15 transmitting them from the booster.
06 [FOURTH EMBODIMENT] The controller of the monitoring equipment can be installed at a location apart from the base station.
20 Fig. 4 is a block diagram showing a configuration of a booster monitoring equipment of a fourth embodiment in accordance with the present invention.
The monitoring equipment 400 according to the present embodiment comprises a controller 402, a switching system 406, a modem 408, a transmitter 412, receivers 404 and 414, a power divider 416, a duplexer 418 and an antenna 420. The present embodiment shares the transmitter 412, receiver 414, power divider 416, duplexer 418 and antenna 420 with the base station 410.
In the present embodiment, the base station 410 35 receives the information from the booster, and transmits the information to the controller 402 by telephone line.
Since a booster is often installed in silent zones among mountains, it is unavoidable that the booster is placed on a mountain or the like, extending the distance between the booster and the monitoring equipment, which presents a problem of increasing the cost of installing a telephone line connecting them.
In vies of this, the present embodiment has the base station receive information from the booster by radio, bringing about a partial solution for the cost.
The booster usually carries out telephone conversations with the base station that sends the perch signal bringing about the maximum received power. When a new base station 15 is installed at such a location as providing the booster S* with a propagation loss less than before, the upstream base ooo station of the booster is changed to the new base station.
Therefore, when the booster monitoring equipment is installed at the same location as a particular base o o 20 station, the change of the upstream base station of the booster will bring about a change of the situation: the booster continues to communicate with the monitoring ee equipment of the primary upstream base station; or a new go• monitoring equipment must be installed in the new upstream base station of the booster.
In contrast, installing the controller of the monitoring equipment at a location apart from the base station via telephone lines as in the present embodiment can concentrate the monitoring function at one place.
The monitoring equipment 400 according to the present 36 embodiment can also receive the various items of information required for the monitoring, enabling appropriate monitoring of the booster. Although the monitoring equipment 400 according to the present embodiment introduces the remote control via the telephone lines to the monitoring equipment 300 according to the third embodiment, the monitoring equipment 200 according to the second embodiment can also introduce the remote control using the telephone lines.
[SUPPLEMENTS]
Although the foregoing embodiments carry out the gain control of both uplink signals and downlink signals in the same manner, they can perform the gain control of the e 15 downlink signals separately from the gain control of the S uplink signals, or only the gain control of the uplink signals.
As described above, the present invention makes it possible to reduce the adverse effect of the booster noise cle 20 on the base station by controlling the gain of the booster.
In addition, it can adjust the balance between the traffic under the booster and the traffic under the base station by controlling the gain of the booster.
0**S goes Moreover, transmitting to the monitoring equipment the information for monitoring the booster (the information about parameters for setting the gain of the booster, information about the condition of the booster and the like) enables the monitoring equipment to carry out appropriate monitoring of the booster using these information items.
37 The present invention has been described in detail with respect to preferred embodiments, and it will now be apparent from the foregoing to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and it is the intention, therefore, in the appended claims to cover all such changes and modifications as fall within the true spirit of the invention.
g* 0 0 o •go ooo oooo

Claims (41)

1. A booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, said booster comprising: an uplink signal amplifier for amplifying an uplink signal from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; a transmission power information receiver for receiving oooo information about transmission power of the reference signal at the base station; a noise power measuring unit for measuring noise power *999 ~at the booster of the uplink signal amplified by said uplink signal amplifier; and a gain controller for controlling an gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster and the noise power of the amplified uplink signal at the booster.
2. The booster as claimed in claim i, further comprising: a downlink signal amplifier for amplifying a downlink signal sent from the base station to the mobile station, wherein said gain controller further controls the gain of the downlink signal in response to the transmission power of the reference signal at the base station, the received 39 power of the reference signal at the booster and the noise power of the amplified uplink signal at the booster.
3. The booster as claimed in claim i, further comprising: an interference measuring unit for measuring an interference quantity of the amplified uplink signal in the booster; and an interference quantity information receiver for receiving information about an interference quantity in the base station, wherein said gain controller controls the gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station. o
4. The booster as claimed in claim 3, further comprising: 20 a downlink signal amplifier for amplifying a downlink signal sent from the base station to the mobile station, wherein said gain controller further controls the gain of the downlink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station. 40 A booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, said booster comprising: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; a transmission power information receiver for receiving information about transmission power of the reference o signal at the base station; an interference measuring unit for measuring an interference quantity in the booster of the uplink signal 15 amplified by said uplink signal amplifier; eeoc an interference quantity information receiver for receiving information about the interference quantity in ~the base station; and a gain controller for controlling the gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
6. The booster as claimed in claim 5, further comprising: a downlink signal amplifier for amplifying a downlink signal sent from the base station to the mobile station, wherein said gain controller further controls the gain of the 41 downlink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
7. The booster as claimed in claim 3 or 5, wherein the reference signal includes information about the interference quantity in the base station, and wherein said interference quantity information receiver receives the information about the interference quantity in e o•* the base station by receiving the reference signal.
8. The booster as claimed in claim 1 or 5, wherein the reference signal includes information about transmission power of the reference signal at the base station, and wherein said transmission power information receiver receives the information about the transmission power of the reference signal at the base station by receiving the reference signal.
9. A booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, said booster comprising: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the 42 booster; a noise power measuring unit for measuring noise power at the booster of the uplink signal amplified by said uplink signal amplifier; and an information transmitter for transmitting information about the received power of the reference signal at the booster and about the noise power of the amplified uplink signal at the booster The booster as claimed in claim 9, further comprising: an interference measuring unit for measuring an interference quantity of the amplified uplink signal in the booster, wherein said information transmitter transmits information about the interference quantity of the amplified uplink signal in the booster to the monitoring equipment for monitoring the booster.
11. A booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, said booster comprising: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; an interference measuring unit for measuring an interference quantity in the booster of the uplink signal 43 amplified by said uplink signal amplifier; and information transmitter for transmitting information about the received power of the reference signal at the booster and about the interference quantity of the amplified uplink signal in the booster.
12. The booster as claimed in claim 10 or 11, further comprising: io an interference quantity information receiver for receiving information about an interference quantity in the base station, wherein said information transmitter transmits, to the monitoring equipment for monitoring the booster, the information about the interference quantity in the base station.
13. The booster as claimed in claim 12, wherein the reference signal includes the information about the :'.120 interference quantity in the base station, and wherein said interference quantity information receiver receives the information about the interference quantity in the base station by receiving the reference signal.
14. The booster as claimed in claim 9 or 11ii, further comprising: 0 a transmission power information receiver for receiving information about transmission power of the reference eeoc signal at the base station, wherein said information transmitter further transmits the 44 information about the transmission power of the reference signal at the base station to the monitoring equipment for monitoring the booster.
15. The booster as claimed in claim 14, wherein the reference signal includes the information about the transmission power of the reference signal at the base station, and wherein said transmission power information receiver receives the information about transmission power of the reference signal at the base station by receiving the reference ~signal.
16. The booster as claimed in claim 9 or 11, further S 15 comprising: a booster information acquisition unit for capturing information about a condition of the booster, wherein said information transmitter transmits the information about the condition of the booster to the monitoring 20 equipment for monitoring the booster.
17. The booster as claimed in claim 9 or 11, wherein said information transmitter transmits information about the gain of the uplink signal to the monitoring equipment for monitoring the booster.
18. The booster as claimed in claim 9 or 11, further comprising a downlink signal amplifier for amplifying a downlink signal from the base station to the mobile station. 45
19. The booster as claimed in claim 18, wherein said information transmitter transmits the information about the gain of the downlink signal to the monitoring equipment for monitoring the booster. The booster as claimed in claim 9 or 11, further comprising: a control signal receiver for receiving a control signal from the monitoring equipment; and *a booster controller for controlling the booster in e* accordance with the control signal. gee•
21. The booster as claimed in claim 20, wherein said booster controller controls, when the control signal is a signal for controlling the gain of the uplink signal and/or the gain of the downlink signal, the gain of the uplink signal and/or the gain of the downlink signal in accordance with the control signal. r o
22. The booster as claimed in any one of claims i, 5, 9 and 11, wherein the reference signal is a perch signal.
23. The booster as claimed in any one of claims 1, 5, 9 and 11, wherein said uplink signal amplifier can vary a time constant for adjusting the gain of the uplink signal.
24. The booster as claimed in any one of claims 2, 4 and 6, wherein said downlink signal amplifier can vary a time constant for adjusting the gain of the downlink signal. 46 A monitoring equipment for monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, said monitoring equipment comprising: a first information receiver for receiving information about received power at the booster of a reference signal transmitted from the base station and about noise power at the booster of an uplink signal which is sent from the mobile station to the base station and amplified by the booster; a second information receiver for receiving information about transmission power of the reference signal at the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, and the transmission power of the reference signal at the base station. o.o,2
26. The monitoring equipment as claimed in claim foo further comprising: a third information receiver for receiving information about an interference quantity in the base station, wherein 25 said first information receiver'further receives 6 ooo. oooo 444o 4 47 information about an interference quantity of the amplified uplink signal in the booster, and said monitoring unit monitors the booster in response to the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station as well.
27. A monitoring equipment for monitoring a booster for receiving, amplifying and transmitting a signal to be 10 'transferred between a mobile station and a base station, said monitoring equipment comprising: a first information receiver for receiving information about received power at the booster of a reference signal transmitted from the base station and about interference quantity in the booster of an uplink signal which is sent from the mobile station to the base station and amplified by the booster; a second information receiver for receiving information Sabout transmission power of the reference signal at the i.20 base station; o a third information receiver for receiving information o about an interference quantity in the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster, the transmission power of the reference signal at the base station and the interference quantity in the base station.
28. The monitoring equipment as claimed in claim 26 or 27, 48 wherein the reference signal includes the information about the interference quantity in the base station, and wherein said third information receiver receives the information about the interference quantity in the base station by receiving the reference signal.
29. The monitoring equipment as claimed in claim 26 or 27, wherein said third information receiver receives the information about the interference quantity in the base station, which information is transmitted from the booster. o. o oooo o o oo oooo oooo oooo o oo. ooo oooo o.o oeo .1 11 The monitoring equipment as claimed in claim 26 or 27, wherein said third information receiver receives, at the base station, the information about the interference quantity in the base station, and said monitoring unit acquires the information about the interference quantity in the base station from said third 20 information receiver via a telephone line.
31. The monitoring equipment as claimed in claim 25or 27, wherein the reference signal includes information about 25 transmission power of the reference signal at the base station, and wherein said second information receiver receives the information about the transmission power of the reference signal at the base station by receiving the reference signal. 49
32. The monitoring equipment as claimed in claim 25 or 27, wherein said second information receiver receives the information about the transmission power of the reference signal at the base station, which information is transmitted from the booster.
33. The monitoring equipment as claimed in claim 25 or 27, wherein said first information receiver receives, at the base station, information about the received power at the booster of the-reference signal transmitted from the base station and the noise power of the amplified uplink signal at the booster; said second information receiver receives, at the base station, the information about the transmission power of the reference signal at the base station; and said monitoring unit acquires via a telephone line, S from said first information receiver, information about the received power at the booster of the reference signal transmitted from the base station and about the noise power of the amplified uplink signal at the booster, and from said second information receiver, the information about the transmission power of the reference signal at the base station.
34. The monitoring equipment as claimed in claim 25 or 27, wherein .said first information receiver further receives information about a condition of the booster; and 50 said monitoring unit monitors the booster in response to the booster condition, as well. The monitoring equipment as claimed in claim 25 or 27, wherein said first information receiver receives information about the gain of the uplink signal and/or about the gain of the downlink signal; and said monitoring unit monitors the booster in response to the gain of the uplink Signal and/or the gain of the downlink signal, as well.
36. The monitoring equipment as claimed in claim 25 or 27, further comprising: a control signal transmitter for transmitting to the booster a control signal for controlling the gain of the uplink signal and/or the gain of the downlink signal, wherein said monitoring unit generates the control signal in response to a monitoring result.
37. The monitoring equipment as claimed in claim 25 or 27, wherein the reference signal is a perch signal.
38. A booster system including a booster for receiving, amplifying and transmitting a signal to be transferred ~between a base station and a mobile station, and a monitoring equipment for monitoring the booster, wherein said booster comprises: an uplink signal amplifier for amplifying an 51 uplink signal senf from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the booster; a noise power measuring unit for measuring noise power at the booster of the uplink signal amplified by said uplink signal amplifier; and 1 0 an information transmitter for transmitting information about the received power of the reference signal at the booster and about the noise power of the amplified uplink signal at the booster to the monitoring equipment, and wherein said monitoring equipment comprises: a first information receiver for receiving the information about the received power of the reference signal at the booster and about the noise power of the uplink signal at the booster; 20 a second information receiver for receiving information about transmission power of the reference ooo signal at the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at the booster, the noise power of the amplified uplink signal ooo at the booster, and the transmission power of the reference signal at the base station.
39. A booster system including a booster for receiving, amplifying and transmitting a signal to be transferred 52 between a base station and a mobile station, and a monitoring equipment for monitoring the booster, wherein said booster comprises: an uplink signal amplifier for amplifying an uplink signal sent from the mobile station to the base station; a received power measuring unit for receiving a reference signal sent from the base station, and for measuring received power of the reference signal at the 10 booster; an interference measuring unit for measuring an interference quantity in the booster of the uplink signal amplified by said uplink signal amplifier; and an information transmitter for transmitting 15 information about the received power of the reference o signal at the booster and about the interference quantity of the amplified uplink signal in the booster to the monitoring equipment, and wherein said monitoring equipment comprises: 5555 20 a first information receiver for receiving the information about the received power of the reference signal at the booster and about the interference quantity of the amplified uplink signal at the booster; a second information receiver for receiving information about transmission power of the reference signal at the base station; a third information receiver for receiving interference quantity in the base station; and a monitoring unit for monitoring the booster in response to the received power of the reference signal at 53 the booster, the i*terference quantity of the amplified uplink signal in the booster, the transmission power of the reference signal at the base station, and the interference quantity in the base station. A control method of controlling, in a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, an gain of an uplink signal sent from the mobile station to i0 the base station, said control method comprising the steps of: receiving a reference signal sent from the base station, and measuring received power of the reference signal at the booster; receiving information about transmission power of the reference signal at the base station; measuring noise power at the booster of the uplink signal amplified by said booster; and controlling an gain of the uplink signal in response to 20 the transmission power of the reference signal at the base station, the received power of the reference signal at the S booster and the noise power of the amplified uplink signal at the booster. 25
41. A control method of controlling, in a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, an gain of an uplink signal sent from the mobile station to the base station, said control method comprising the steps of: 54 receiving a reference signal sent from the base station, and measuring received power of the reference signal at the booster; receiving information about transmission power of the reference signal at the base station; measuring an interference quantity in the booster of the uplink signal amplified by said booster; receiving information about the interference quantity in the base station; and controlling the gain of the uplink signal in response to the transmission power of the reference signal at the base station, the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the booster and the interference quantity in the base station.
42. A monitoring method of monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, *S :'i120 said monitoring method comprising the steps of: i receiving information about received power at the booster of a reference signal transmitted from the base station and about noise power at the booster of an uplink signal which is sent from the mobile station to the base :25 station and amplified by the booster; .oo. receiving information about transmission power of the reference signal at the base station; and 99:9 monitoring the booster in response to the received power of the reference signal at the booster, the noise power of the amplified uplink signal at the booster, and 55 the transmission pbower of the reference signal at the base station.
43. A monitoring method of monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, said monitoring equipment comprising: receiving information about received power at the booster of a reference signal transmitted from the base station and about interference quantity in the booster of an uplink signal which is sent from the mobile station to the base stationand amplified by the booster; receiving information about transmission power of the reference signal at the base station; receiving information about an interference quantity in the base station; and monitoring the booster in response to the received power of the reference signal at the booster, the interference quantity of the amplified uplink signal in the i 20 booster, the transmission power of the reference signal at the base station and the interference quantity in the base station.
44. The booster as claimed in claim 18, wherein said downlink signal amplifier can change a time constant for oo" adjusting the gain of the downlink signal. 00000; 0 000* .gob 0o 00 gig.0 -56- 'A booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, said booster being substantially as described herein with reference to any one of the embodiments, as that embodiment is described with reference to the accompanying drawings.
46. A monitoring equipment for monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, said monitoring equipment being substantially as described herein with reference to any one of the embodiments, as that embodiment is described with reference to the accompanying drawings.
47. A booster system including a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, and a monitoring equipment for monitoring the booster, said booster system being substantially as described herein with reference to any one of the embodiments, as that embodiment is described with reference to the accompanying drawings.
48. A control method of controlling, in a booster for receiving, amplifying and transmitting a signal to be transferred between a base station and a mobile station, a gain of an uplink signal sent from the mobile station to the base station, said control method being substantially as described herein with reference to any one of the embodiments, as that embodiment is described with reference to the accompanying drawings. 25
49. A monitoring method of monitoring a booster for receiving, amplifying and transmitting a signal to be transferred between a mobile station and a base station, said monitoring method being substantially as described herein with reference to any one of the embodiments, as that embodiment is described with reference to the accompanying drawings. se DATED this twenty-third Day of December, 2003 PatnNTT DoCoMo, Inc. ~Patent Attorneys for the Applicant SPRUSON FERGUSON [R:ALIBU]04546.doc,xi
AU55025/00A 1999-08-31 2000-08-30 Booster, monitoring apparatus, booster system, control method and monitoring method Ceased AU770706B2 (en)

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Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2323881A1 (en) * 2000-10-18 2002-04-18 Dps Wireless Inc. Adaptive personal repeater
JP2002245962A (en) * 2000-12-12 2002-08-30 Jeol Ltd Electrospray iron source
US7263143B1 (en) * 2001-05-07 2007-08-28 Adaptix, Inc. System and method for statistically directing automatic gain control
JP4489997B2 (en) * 2001-06-13 2010-06-23 株式会社日立国際電気 Relay amplifier
US6892080B2 (en) * 2001-11-27 2005-05-10 Arrista Technologies, Inc. Booster amplifier for cellular telephone cradles
US20030185289A1 (en) * 2001-12-07 2003-10-02 Koninklijke Philips Electronics N.V. Cordless modem for portable computers
US7050758B2 (en) * 2002-02-28 2006-05-23 Nortel Networks Limited Self-configuring repeater system and method
US7024231B2 (en) * 2002-10-28 2006-04-04 Allen Cohen Booster system in a cellular phone base station
RU2005121147A (en) * 2002-12-05 2006-01-20 Квэлкомм Инкорпорейтед (US) SYSTEM AND METHOD FOR INSTALLING REINFORCEMENT FEEDBACK REINFORCEMENT LINK IN WIRELESS COMMUNICATION SYSTEMS
CN1225849C (en) * 2003-07-18 2005-11-02 大唐移动通信设备有限公司 Method and device for proceeding bidirectional synchronous translate against radio signal
JP4342518B2 (en) * 2003-10-02 2009-10-14 富士通株式会社 Repeater and its relay transmission method
US7299005B1 (en) 2004-01-07 2007-11-20 Sprint Spectrum L.P. Radio frequency repeater with automated block/channel selection
US7480485B1 (en) * 2004-01-07 2009-01-20 Sprint Spectrum L.P. Radio frequency repeater with automated block/channel selection
US20060058071A1 (en) * 2004-09-14 2006-03-16 Buren Alan V Gain selected cell phone booster
US7221967B2 (en) * 2004-09-14 2007-05-22 Wilson Electronics, Inc. Enhanced gain selected cell phone booster system
US7680452B2 (en) 2004-10-20 2010-03-16 Panasonic Corporation Repeater
US7418032B2 (en) * 2005-03-15 2008-08-26 International Business Machines Corporation Altering power consumption in communication links based on measured noise
US7447490B2 (en) * 2005-05-18 2008-11-04 Nvidia Corporation In-situ gain calibration of radio frequency devices using thermal noise
DE602005009340D1 (en) * 2005-06-17 2008-10-09 Fujitsu Ltd Power control in the multi-way communication system
EP2144466A3 (en) * 2005-06-17 2011-03-09 Fujitsu Limited Systems and methods for power control in multi-hop communication system
US7848758B1 (en) 2005-09-27 2010-12-07 Sprint Spectrum L.P. Dynamic allocation of carrier frequencies in wireless wide area networks
EP1943752A4 (en) * 2005-10-31 2013-03-13 Ericsson Telefon Ab L M Method and apparatus for repeating a signal in a wireless communication system
US8537761B1 (en) 2005-12-28 2013-09-17 At&T Intellectual Property Ii, L.P. Incorporation of mesh base stations in a wireless system
US7865159B2 (en) * 2006-01-27 2011-01-04 Qualcomm Incorporated Repeater rise-over-thermal (RoT) value calibration
JP4847785B2 (en) * 2006-05-01 2011-12-28 株式会社エヌ・ティ・ティ・ドコモ Wireless relay amplification system and wireless relay method
US7623866B1 (en) 2006-07-10 2009-11-24 Sprint Spectrum L.P. Automatic generation of neighbor lists in a wireless network
US8023426B2 (en) * 2007-03-01 2011-09-20 Thomson Licensing Method to select access point and relay node in multi-hop wireless networking
KR100893010B1 (en) 2007-05-21 2009-04-10 주식회사 케이티프리텔 Variable attenuation method of repeater equipped with attenuator and remote management operating system thereof
US8473018B2 (en) * 2007-05-22 2013-06-25 Wilson Electronics, Llc Mobile device cradle having an integrated antenna or amplifier
JP5178414B2 (en) * 2007-09-26 2013-04-10 株式会社日立国際電気 Wireless repeater amplifier
JP4776637B2 (en) * 2008-01-09 2011-09-21 三菱電機株式会社 Communications system
JP5107069B2 (en) * 2008-01-25 2012-12-26 株式会社エヌ・ティ・ティ・ドコモ Base station apparatus and method used in mobile communication system
JP2010130439A (en) * 2008-11-28 2010-06-10 Sumitomo Electric Ind Ltd Radio relay system
US8498241B1 (en) 2009-03-10 2013-07-30 Sprint Spectrum L.P. Use of macro-network channel-list messages for selection of carriers for low-cost internet base-station frequency-hopping pilot beacons
US8325648B1 (en) 2009-04-29 2012-12-04 Sprint Spectrum L.P. Methods and systems for assigning a wireless communication device to a carrier frequency
WO2010128901A1 (en) * 2009-05-04 2010-11-11 Telefonaktiebolaget L M Ericsson (Publ) Determining the repetater gain in dependence of interference
US8320313B1 (en) 2009-06-19 2012-11-27 Sprint Spectrum L.P. Method and system for carrier frequency management based on slot contention
US9107148B1 (en) 2009-11-30 2015-08-11 Sprint Spectrum L.P. Use of pre-handoff macro-carrier data for prioritization of carriers in femtocell frequency-hopping pilot beacons
US8346160B2 (en) * 2010-05-12 2013-01-01 Andrew Llc System and method for detecting and measuring uplink traffic in signal repeating systems
CN102448103B (en) * 2010-10-11 2014-07-02 中兴通讯股份有限公司 Method and device for intelligently improving wireless radio frequency index in distributed network in real time
US8798013B1 (en) 2011-03-25 2014-08-05 Sprint Spectrum L.P. Method and system for management of data transmission in timeslots
CN103416088A (en) * 2011-04-28 2013-11-27 富士通株式会社 Method and apparatus for mode-switching at a base station
US8532566B2 (en) * 2011-06-08 2013-09-10 Andrew Llc System and method for reducing desensitization of a base station transceiver for mobile wireless repeater systems
WO2013009835A1 (en) 2011-07-11 2013-01-17 Andrew Llc Method and apparatuses for managing a distributed antenna system
EP3190728B1 (en) 2011-09-15 2022-03-09 Andrew Wireless Systems GmbH Configuration sub-system for telecommunication systems
US9036486B2 (en) 2011-09-16 2015-05-19 Andrew Wireless Systems Gmbh Integrated intermodulation detection sub-system for telecommunications systems
CN102710406B (en) * 2012-05-21 2016-02-10 广州杰赛科技股份有限公司 A kind of full duplex communication system and method thereof
EP3614561A1 (en) 2012-09-14 2020-02-26 Andrew Wireless Systems GmbH Uplink path integrity detection in distributed antenna systems
US9913147B2 (en) 2012-10-05 2018-03-06 Andrew Wireless Systems Gmbh Capacity optimization sub-system for distributed antenna system
JP2014086769A (en) * 2012-10-19 2014-05-12 Softbank Mobile Corp Radio relay device, radio relay method, and radio relay program
DE102013101590A1 (en) * 2013-02-18 2014-08-21 Bury Sp.Z.O.O Circuit arrangement for compensation of an occurring in an antenna signal connection between a mobile station and an antenna attenuation and method for compensation thereto
CA2814303A1 (en) 2013-04-26 2014-10-26 Cellphone-Mate, Inc. Apparatus and methods for radio frequency signal boosters
US9065415B1 (en) 2014-01-28 2015-06-23 Wilson Electronics, Llc Configuring signal boosters
CN105992330B (en) * 2015-01-28 2019-10-18 中国移动通信集团公司 A kind of gain adjusting method and device
CN111669813B (en) * 2020-05-31 2022-10-28 西南电子技术研究所（中国电子科技集团公司第十研究所） Adaptive power control method for uplink of phased array ground station
CN115333598A (en) * 2021-05-11 2022-11-11 维沃移动通信有限公司 Gain control method and device of signal amplifier and network side equipment
JP7470176B1 (en) 2022-12-26 2024-04-17 Kddi株式会社 Wireless repeater, control method, and program for suppressing amplification of unnecessary waves

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634191A (en) * 1994-10-24 1997-05-27 Pcs Microcell International, Inc. Self-adjusting RF repeater arrangements for wireless telephone systems
US6404775B1 (en) * 1997-11-21 2002-06-11 Allen Telecom Inc. Band-changing repeater with protocol or format conversion

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK158688A (en) * 1987-03-24 1988-09-25 Mitsubishi Electric Corp HIGH FREQUENCY SIGNAL AMPLIFIER
US5095528A (en) * 1988-10-28 1992-03-10 Orion Industries, Inc. Repeater with feedback oscillation control
US5267262A (en) * 1989-11-07 1993-11-30 Qualcomm Incorporated Transmitter power control system
US5138277A (en) * 1990-09-28 1992-08-11 Hazeltine Corp. Signal processing system having a very long time constant
GB2258586B (en) * 1991-08-05 1995-05-10 Mercury Personal Communication Radio signal enhancer
NZ255617A (en) * 1992-09-04 1996-11-26 Ericsson Telefon Ab L M Tdma digital radio: measuring path loss and setting transmission power accordingly
JP3237350B2 (en) * 1993-11-12 2001-12-10 松下電器産業株式会社 Automatic gain control device
US5802452A (en) * 1996-01-17 1998-09-01 Gte Government Systems Corporation Multiple channel radio frequency repeater
SE511385C2 (en) * 1996-03-04 1999-09-20 Allgon Ab Method and apparatus for monitoring a mobile telephone repeater
JP3756344B2 (en) * 1999-05-11 2006-03-15 京セラ株式会社 Multi-mode mobile phone device
US6469984B1 (en) * 1999-06-24 2002-10-22 Qualcomm Incorporated Method and system for monitoring traffic on a code division multiple access repeater

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634191A (en) * 1994-10-24 1997-05-27 Pcs Microcell International, Inc. Self-adjusting RF repeater arrangements for wireless telephone systems
US6404775B1 (en) * 1997-11-21 2002-06-11 Allen Telecom Inc. Band-changing repeater with protocol or format conversion

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KR20010050297A (en) 2001-06-15
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US6690915B1 (en) 2004-02-10
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